On October 15, the 15-kilometer section of the "Transfering Heat into Zhengzhou" long-distance heat supply pipe network project, undertaken by Dengfeng Company, was fully completed. With a pipe diameter of 1.6 meters and a maximum design pressure of 3 MPa, this project features the largest pipe diameter, highest pressure, and the use of internal resistance-reducing coatings along the entire line. It has become the most advanced long-distance heat supply pipe network project of its kind in China.